Jaguar XJS Coil

There Is A Small Black Wire On The Positive Side Of The Coil Which Is Grounded. When You Turn The Ignition On, The Grounded Wire Is...

My 'a' Bank Coil And Circuit Back To The Icu Is Fine But The 'b' Bank Circuit Causes The Output Of The Coil To Quit After ~1second. When...

I Go Thru 2 Coils A Year. Seems When I Do A Lot Of Stop And Start Around Town Driving And It Get's Extremly Hot Under The Hood A Coil Fails...